Downsizing from FG Falcon - options?

[ultvict]

I have recently moved out of home and into a share house in the suburbs. Everything is really close to my new house, within 5 mins. With hardly having to drive or very short distances I'm starting to feel having a big FG G6 isn't as practical now compared to the long country drives I used to do.
Being young and still at uni, I don't see the point of having a fairly recent car get hardly driven and loose value, so I have considered downsizing to either a smaller car, or something more economical. Also I wouldn't mind putting a bit of money in the bank as well.

Here are the main options I am considering at buying when my G6 LE sells (hopefully fairly soon).

AU Fairmont Ghia (preferably on LPG)
AU Xr6 (again preferably on LPG)
WS Fiesta Zetec
LV/LV Mk2 Focus Zetec
MB Mondeo Zetec/Titanium

I have always had a keen eye for a AU Fairmont Ghia and keeping a watch on a few, but my dad doesn't recommend going back to an older car. I really enjoyed my previous AU Fairmont, and believe they are a tough and fairly reliable car, and chap to run on LPG.

I test drove a Fiesta, and while I was somewhat impressed for a small car, I don't think I could drive something that small, despite potential savings in fuel costs - but still am somewhat open to it as a possibility.

So I ask for your opinion on my situation, which of the above would you consider and why, or is there an option that I have missed and should check out also?

Thanks for your input!